Professor Patrick Honohan:

We have looked into the question asked whether there is more we should be doing.

I think the reason we have not done this is that it is an undirected search into a body of tapes. It is not clear to us how we can effectively achieve any result from that. It is basically a problem of a giant haystack and we have not solved that haystack problem. If there was a way to imagine how to do this and get some value out of it, we would do it and we will do it. So far, though, we have not come up with that.